1.1 Tb/s/λ at 9.8 Bit/s/Hz DWDM Transmission over DCI Distances Supported by CMOS DACs

We report on a 16-nm CMOS DAC based transmitter optimization enabling bitrates up to 1.15 Tb/s. We successfully demonstrate DWDM transmission over DCI distances up to 118 km at 1.1 Tb/s and spectral efficiencies of 9.8 bit/s/Hz.